US4709423A - Toilet tank dispenser - Google Patents
Toilet tank dispenser Download PDFInfo
- Publication number
- US4709423A US4709423A US06/939,271 US93927186A US4709423A US 4709423 A US4709423 A US 4709423A US 93927186 A US93927186 A US 93927186A US 4709423 A US4709423 A US 4709423A
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- US
- United States
- Prior art keywords
- dispenser
- disinfectant
- product chamber
- chamber
- cross
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000645 desinfectant Substances 0.000 claims abstract description 53
- 230000037361 pathway Effects 0.000 claims abstract description 19
- YRIZYWQGELRKNT-UHFFFAOYSA-N 1,3,5-trichloro-1,3,5-triazinane-2,4,6-trione Chemical class ClN1C(=O)N(Cl)C(=O)N(Cl)C1=O YRIZYWQGELRKNT-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229950009390 symclosene Drugs 0.000 claims abstract description 16
- 239000012530 fluid Substances 0.000 claims abstract description 13
- 238000004891 communication Methods 0.000 claims abstract description 12
- 239000007864 aqueous solution Substances 0.000 claims abstract description 9
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical class [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000011575 calcium Substances 0.000 claims abstract description 4
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 4
- 150000001469 hydantoins Chemical class 0.000 claims abstract description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical class [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical class [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 3
- 239000011777 magnesium Chemical class 0.000 claims abstract description 3
- 229910052749 magnesium Chemical class 0.000 claims abstract description 3
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical class ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000000047 product Substances 0.000 claims description 42
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 8
- 239000000460 chlorine Substances 0.000 claims description 8
- 229910052801 chlorine Inorganic materials 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- PIEXCQIOSMOEOU-UHFFFAOYSA-N 1-bromo-3-chloro-5,5-dimethylimidazolidine-2,4-dione Chemical group CC1(C)N(Br)C(=O)N(Cl)C1=O PIEXCQIOSMOEOU-UHFFFAOYSA-N 0.000 claims description 5
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical group [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims description 5
- 239000006227 byproduct Substances 0.000 claims description 5
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 239000000243 solution Substances 0.000 abstract description 31
- 239000000463 material Substances 0.000 abstract description 19
- 239000007789 gas Substances 0.000 description 31
- 239000000203 mixture Substances 0.000 description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 238000004140 cleaning Methods 0.000 description 9
- 239000000758 substrate Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- VRLDVERQJMEPIF-UHFFFAOYSA-N dbdmh Chemical compound CC1(C)N(Br)C(=O)N(Br)C1=O VRLDVERQJMEPIF-UHFFFAOYSA-N 0.000 description 4
- 239000003599 detergent Substances 0.000 description 4
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 3
- LWXVCCOAQYNXNX-UHFFFAOYSA-N lithium hypochlorite Chemical compound [Li+].Cl[O-] LWXVCCOAQYNXNX-UHFFFAOYSA-N 0.000 description 3
- 230000005012 migration Effects 0.000 description 3
- 238000013508 migration Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- KEQGZUUPPQEDPF-UHFFFAOYSA-N 1,3-dichloro-5,5-dimethylimidazolidine-2,4-dione Chemical compound CC1(C)N(Cl)C(=O)N(Cl)C1=O KEQGZUUPPQEDPF-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- YZQBYALVHAANGI-UHFFFAOYSA-N magnesium;dihypochlorite Chemical class [Mg+2].Cl[O-].Cl[O-] YZQBYALVHAANGI-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- MSFGZHUJTJBYFA-UHFFFAOYSA-M sodium dichloroisocyanurate Chemical compound [Na+].ClN1C(=O)[N-]C(=O)N(Cl)C1=O MSFGZHUJTJBYFA-UHFFFAOYSA-M 0.000 description 2
- 238000003856 thermoforming Methods 0.000 description 2
- 239000004484 Briquette Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- PQRDTUFVDILINV-UHFFFAOYSA-N bcdmh Chemical compound CC1(C)N(Cl)C(=O)N(Br)C1=O PQRDTUFVDILINV-UHFFFAOYSA-N 0.000 description 1
- 235000021028 berry Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 150000007973 cyanuric acids Chemical class 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- WJRBRSLFGCUECM-UHFFFAOYSA-N hydantoin Chemical compound O=C1CNC(=O)N1 WJRBRSLFGCUECM-UHFFFAOYSA-N 0.000 description 1
- 229940091173 hydantoin Drugs 0.000 description 1
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical class Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- QEHKBHWEUPXBCW-UHFFFAOYSA-N nitrogen trichloride Chemical compound ClN(Cl)Cl QEHKBHWEUPXBCW-UHFFFAOYSA-N 0.000 description 1
- IFIDXBCRSWOUSB-UHFFFAOYSA-M potassium;1,5-dichloro-4,6-dioxo-1,3,5-triazin-2-olate Chemical compound [K+].ClN1C(=O)[N-]C(=O)N(Cl)C1=O IFIDXBCRSWOUSB-UHFFFAOYSA-M 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
- E03D9/02—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing
- E03D9/03—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing consisting of a separate container with an outlet through which the agent is introduced into the flushing water, e.g. by suction ; Devices for agents in direct contact with flushing water
- E03D9/033—Devices placed inside or dispensing into the cistern
- E03D9/038—Passive dispensers, i.e. without moving parts
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D9/00—Sanitary or other accessories for lavatories ; Devices for cleaning or disinfecting the toilet room or the toilet bowl; Devices for eliminating smells
- E03D9/02—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing
- E03D2009/024—Devices adding a disinfecting, deodorising, or cleaning agent to the water while flushing using a solid substance
Definitions
- This invention relates to a toilet tank dispenser adapted for placement in the tank of a flush toilet, the dispenser releasing a concentrated solution of a disinfectant material into the tank water as a consequence of a flush, a portion of said disinfectant solution, as diluted, being retained in the residual water of the toilet bowl after the flush. More specifically, the present invention relates to a toilet tank dispenser having a product chamber containing a disinfectant composition, which composition forms gases in aqueous solution, a refill/discharge pathway that is an inverted U-conduit, and means for directing said gases into the refill/discharge conduit, the gases that accumulate in the upper portion of said conduit isolating the concentrated solution within said chamber from the tank water during the quiescent periods between flushes.
- the present invention relates to said toilet tank dispenser wherein the gas-forming disinfecting composition contains as the disinfectant agent a material selected from the group consisting of a halogenated hydantoin, a chlorinated isocyanuric acid and calcium, magnesium and lithium hypochlorite.
- Toilet cleaning articles adapted for placement in the toilet tank of a flush toilet and further adapted to release concentrated solutions of cleaning additives in response to a change in the level of the tank water are well known.
- Such devices that are adapted to form an air lock in the refill/discharge means are also well known.
- U.S. Pat. Nos. 4,261,957 and 4,301,556, each to Schimanski and U.S. Pat. No. 4,227,853 to McDuffy disclose dispensers comprising a basket to receive a solid cake or bar containing the active cleaning constituents, the basket having a plurality of holes for the intake and outflow of liquid.
- U.S. Pat. Nos. 650,161 to Williams, et al., and 1,175,032 to Williams disclose dispensers provided with siphon means adapted to withdraw a given volume of solution from the dispenser. In these dispensers the inverted U-shaped siphon conduit extends well into the solution chamber, the cross-sectional area of said siphon tube to the cross-sectional area of the chamber being very small. Similar dispensers are disclosed in U.S. Pat. No. 969,729 to Smith and U.K. Pat. Nos. 1O,11O (1907) to Holloway; 2,125 (1908) to Berry; and 11,469 (1890) to Fleuss.
- U.S. Pat. Nos. 4,171,546; 4,186,856, and 4,208,747 each to Dirksing; 4,251,012 to Owens, et al.; 4,281,421 to Nyquist, et al.; 4,216,027 to Wages, and U.K. Patent Application No. 2,090,884A each disclose passive dispensers wherein the product chamber solution is isolated from the tank water during quiescent periods by means of an air lock.
- the air lock is provided in the top of the chamber and straddles both an inlet conduit and an outlet conduit, the solution contained in the product chamber being evacuated therefrom through the discharge conduit in view of a pressure differential between the interior of said chamber and the atmosphere.
- the dispenser operates in like manner, the dispenser having, however, an interior measuring cavity within the dispenser, said measuring cavity having a water inlet port.
- the dispenser comprises a product chamber, a reservoir for containing a quantity of the additive product solution, an inlet/discharge conduit having its lowermost end in fluid communication with the reservoir and its uppermost end in fluid communication with a siphon tube, an air trap disposed adjacent the inlet/discharge conduit, and an air vent in fluid communication with the reservoir and product chamber.
- tank water enters the siphon tube displacing air into said air trap, the entrapped air, after filling is complete, repositioning itself to the top of the siphon tube.
- the '884A British Application discloses a dispensing device comprising an upper chamber with port means in fluid communication with the tank water, a lower chamber, serpentine first conduit means between said upper and lower chambers, an air lock being formed during refill in the serpentine conduit means, and inverted U-shaped conduit means disposed from the top of the lower chamber, an air lock being formed in the U-shaped conduit means during refill.
- liquid in the upper chamber flows into the lower chamber in view of the head differential between the liquid in the dispenser and the tank water level, the liquid in the upper chamber displacing the solution in the lower chamber.
- the air lock in the serpentine conduit isolates the upper and lower chambers, and because the liquid in the upper chamber is substantially devoid of any solute, migration of solute from the upper chamber does not occur. In view of the air locks associated with each conduit, migration of solute or solution from the lower chamber also does not occur.
- the dispenser of the present invention is adapted to direct gases formed in aqueous solution by the disinfectant composition to the siphon conduit for retention therein.
- the dispenser of the present invention comprises a product chamber for containing a disinfectant composition, said composition forming gases in aqueous solution over time, the product chamber having a lower portion and an upper portion, the upper portion being of smaller width such that a shoulder is formed at the top of said lower portion, a refill/discharge pathway in the form of an inverted U-conduit, the interior leg of said conduit entering the product chamber at said shoulder, and vent means proximate the top of said upper portion.
- the refill/discharge pathway is a siphon conduit, the exterior leg thereof being longer than said interior leg.
- the disinfectant composition suitable for incorporation in the dispenser of the present invention comprises a disinfectant material that forms gases in aqueous solution over time.
- Suitable disinfectant materials may be selected from the group consisting essentially of 1,3-dichloro-5,5-dimethyl hydantoin; 1,3-dibromo-5, 5-dimethyl hydantoin; 1-bromo-3-chloro-5,5-dimethyl hydantoin; trichloroisocyanuric acid, and inorganic salts of hypochlorites, for example, calcium, lithium and magnesium hypochlorites.
- the disinfectant composition is preferably provided in the lower portion of the product chamber, and gases formed therein rise through the disinfectant solution, a portion of the evolved gas impinging upon the shoulder, said shoulder thereby facilitating the accumulation of gas within the refill/discharge pathway, the accumulated gas within the pathway forming a gas barrier preventing diffusion of disinfectant during quiescent periods.
- FIG. 1 is a perspective view of a first embodiment of the dispenser of the present invention.
- FIG. 2 is a perspective view of a second embodiment of the dispenser of the present invention.
- FIG. 3 is a cross-sectional side elevational view through lines 3--3 of FIG. 2.
- FIG. 4 is a perspective view of a dual chamber dispenser for separately dispensing a first cleaning solution and a second cleaning solution, which is the disinfectant solution.
- the dispenser 10 of the present invention comprises a product chamber 11 having the lower portion 12 for containing a disinfectant composition hereinafter described and an upper portion 14, the volume of which is essentially equal to the volume of solution discharged from the dispenser, a refill/discharge pathway 30 which is an inverted U-conduit, and a vent 40, which is shown to extend from the top of the product chamber 11.
- the dispensing article herein is fabricated by thermoforming a first thermoplastic resin substrate 22 to provide the product chamber, refill/discharge pathway, and vent, respectively, filling the product chamber with the disinfectant composition, and securing to the back of the substrate 22 a backing substrate 22'.
- Other suitable methods of fabrication can be used, for example, injection molding.
- the refill/discharge conduit 30 comprises a long leg 31 and a short leg 32, the legs 31 and 32 being arcuately joined at their uppermost portions, said arcuate portion being designated by numeral 39 the short leg 32 being in fluid communication with the lower portion 12 of the product chamber 11 at the top wall segment 18, which wall segment 18 is hereinafter referred to as the shoulder 18.
- the uppermost portion 39 of the refill/discharge pathway 30 is at a level that is at or is slightly below that of the top wall 20 of the upper portion 14 of the product chamber 11.
- the long leg 31 of the refill/discharge pathway 30 comprises an end portion 33 having an orifice 36 proximate the bottom thereof, a middle portion 34 of larger horizontal cross-sectional area than said end portion 33, and a top portion 35 of progressively smaller cross-sectional area than that of the middle portion 34.
- the cross-sectional area of the short leg 32 is essentially constant through its height, and is smaller than that of the top portion 35 of the long leg 31.
- the uppermost portion 39 which is in transition between said top portion 39 of leg 31 and leg 32, has a decreasing cross-sectional area normal to the flow path of fluid.
- the product chamber 11 is vented by means of conduit 40 extending from the top wall 20 of the upper portion to the periphery of the elastic substrate 22.
- indicia 41 is provided to advise the consumer of the proper placement of the dispenser 10 in the toilet tank, which is above top wall 20 of the product chamber 11.
- the disinfectant composition 25 is provided in the lower portion 12 of product chamber 11 and may be in tablet, pouch, agglomerate, briquette, or cake form, the composition containing a disinfectant material selected from the group consisting of 1,3-dibromo-5,5-dimethyl hydantoin; 1,3-dichloro-5,5-dimethyl hydantoin, 1-bromo-3-chloro-5,5-dimethyl hydantoin, trichloroisocyanuric acid, calcium hypochlorite, lithium hypochlorite, and magnesium hypochlorite.
- a preferred disinfectant material comprises a mixture of 2 to 4 parts trichloroisocyanuric acid to 1 part cyanuric acid.
- the precise composition of the gas evolved depends on the particular disinfectant material.
- the hydantoin disinfectant materials high levels of nitrogen are evolved, while for the trichloroisocyanuric acid, the majority of the gas evolved is carbon dioxide with lesser amounts of nitrogen, trichloramine, and chlorine.
- the rate of evolution also varies with respect to the particular disinfectant material.
- a tableted composition containing trichloroisocyanuric acid was found to evolve gas at a rate of from about 0.029 to about 0.069 cc/g/hr in a 24-hour period, 0.12 cc/g/hr in a 48-hour period, and 0.07 cc/g/hr in a 144-hour period.
- the rate of gaseous evolution being 0.006 cc/g/hr after 24 hours and 0.016 cc/g/hr after 48 hours. With this formulation there appears to be a leveling off of the evolution rate after 48 hours, the rate after 72 hours being 0.019 cc/g/hr, and after 240 hours, 0.018 cc/g/hr.
- the volume required to create the gas barrier across the arcuate portion 37 of the refill/discharge conduit should be, by proper dimensions of the arcuate portion, less than about 0.5 cc and, preferably, less than about 0.25 cc. Thus, it is seen that the amount of gas liberated per hour per gram provides sufficient gas to provide the requisite gas barrier, which should form in less than 24 hours.
- FIG. 1 is preferred with disinfectant compositions that evolve large amounts of gas, a major portion of the gas evolved bypassing shoulder 18 and going to the upper portion for venting through vent 40.
- Such disinfectant materials are calcium hypochlorite and lithium hypochlorite.
- FIG. 2 is a second embodiment of the dispenser of the present invention, this embodiment being preferred for use with disinfectant compositions that evolve less amounts of gaseous by-products, such disinfectant composition containing the aforesaid halogenated hydantoins and trichloroisocyanuric acid.
- This embodiment is particularly preferred with regard to a disinfectant composition containing 2 to 4 parts trichloroisocyanuric acid and 1 part cyanuric acid.
- the dispenser 110 comprises a product chamber 111 having a lower portion of 112 and an upper portion 114; a refill/discharge pathway 130, and a vent 140.
- the lower portion 112 has front wall 115a, side walls 116 and 117a, bottom wall 121, and top wall segment 118a.
- the upper chamber 114 has a front wall 115b, side walls 117b and 119, top wall 120, and bottom wall segment 118b.
- the back wall which is the planar backing substrate 123 is common to both upper and lower portions of the product chamber 111.
- the disinfectant composition is provided in the lower portion 112 of product chamber 111, although this is not essential where the solution formed tends to form a density-concentration gradient.
- a 1-bromo-3-chloro-5,5-dimethylhydantoin tablet provided in the upper portion 114 of the product chamber 111 forms a solution in the dispenser 110 that has its highest concentration of solute in the lower portion 112, the gases evolved in the lower portion 112 forming the gas barrier in arcuate portion 139 in accordance herewith.
- top wall segment 118a and bottom wall segment 118b extend only partially into the depth of the product chamber normal to the backing substrate, thus providing an elongate path or channel 156 for fluid communication between the lower portion 112 and upper portion 114 of the product portion 111.
- the top wall segment 118a of the lower portion 112 provides a baffle preventing the substantial bypassing of gas evolved from the disinfectant tablet from the lower portion 112 to the upper portion 114.
- the cross-sectional area of the baffle 118a may be adjusted, depending upon the degree of gas evolution. However, decrease in the cross-sectional area of the baffle 118a preferably is obtained by reducing the longitudinal dimension of the baffle, rather than the transverse dimension of the baffle.
- the baffle may be a wall segment common to both the lower portion 112 and the upper portion 114. However, the particular construction shown in FIG. 2 wherein the baffle 118a and wall segment 118b are separate and join proximate the backing substrate is more suitable for fabrication by thermoforming.
- FIG. 4 illustrates a dispenser 200 adapted for releasing into the tank water simultaneously from separate product chambers 211a and 211b a first cleaning solution and a second cleaning solution, said first cleaning solution being a detergent solution and the second cleaning solution being the disinfectant solution.
- Product chamber 211a containing the detergent composition is the same as shown in FIG. 1.
- detergent compositions generally do not evolve gaseous by-products in aqueous solution, and it is not critical that the product chamber containing the detergent composition have the construction disclosed herein.
- Product chamber 211b is the same as that shown in FIG. 2.
- the dispenser of the present invention releases active disinfectant solution for a period of from about 20 to about 40 days, depending on the level of use thereof. On average, the dispenser releases the disinfectant solution for a period of 30 days, based upon an average of from about 8 to 12 flushes per day.
- the volume of the product chamber is preferably from about 65 to about 85 ml, the upper portion of the product chamber being from about 45 to about 75 ml, the solution released by the dispenser being contained in said upper portion.
- the disinfectant material weighs typically between about 25 to about 45 grams active disinfectant material, and is preferably in tablet form. The tablet is about 11/2 inches diameter by about 1/2 inch in thickness.
- a typical dispenser as shown in FIG. 2 has a lower portion that is about 21/2 inches high by 2-11/16 inches wide by about 1 inch deep, and an upper portion that is about 2 inches high by about 21/8 inches wide by about 1 inch deep.
- the elongate pathway between the upper portion and the lower portion is about 3/16 inch in width, measured normal to the backing substrate.
- the shoulder of the dispenser illustrated in FIG. 2 i.e. that area where the upper portion does not overlie the lower portion may be slightly raised in the direction of the refill/discharge pathway, thereby assuring that the evolved gases are collected in the refill/discharge pathway.
- the top wall 20 or 120 of the upper chamber may be directed slightly upwardly towards the vent conduit 40 or 140, respectively, thereby directing evolved gases out of the product chamber.
- the dispenser of FIG. 1 containing various disinfectant materials was tested to ascertain the concentration of disinfectant material in the tank water.
- the test was conducted by placing identical units in separate toilet tanks, and measuring the concentration of disinfectant material as available chlorine proximate the outlet orifice 33 of the refill/discharge pathway 30, for various disinfectant materials. The tanks were not flushed during the test period. Concentration proximate the outlet orifice 33, under these static conditions, is the maximum concentration in the tank water. The results are shown in Table I.
- the dispenser of FIG. 2 containing a 28 gram trichloroisocyanuric acid tablet was tested over a 31 day period.
- a dispenser was placed (after priming) in each of four tanks, each tank containing 14 liters of city tap water. Water samples were taken and analyzed periodically to determine available chlorine concentrations, the samples being taken two inches from the bottom of the tanks proximate the overflow pipe and flush valve. The tanks were not flushed during the test. The results are tabulated in Table II.
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
Abstract
Description
TABLE I ______________________________________ Concentration (ppm available chlorine) Disinfectant 7days 14days 20 days ______________________________________ TCICA 3.7 27 30 BCDMH 0.2 0.8 0.4DBDMH 11 7.9 20 Calcium Hypochlorite 2.6 1.3 0.5 Sodium Dichlorocyanurate 423 Discon- Discon- tinuedtinued Potassium Dichlorocyanurate 30 70.5 101 ______________________________________
TABLE II ______________________________________ Time Average Concentration (Days) (ppm available chlorine) ______________________________________ 1 1.5 3 1.4 4 1.06 8 2.85 10 4.22 12 5.65 14 9.25 17 13.12 18 15.62 19 16.25 24 14.37 26 15.31 31 19.06 ______________________________________
Claims (14)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US06/939,271 US4709423A (en) | 1982-11-08 | 1986-12-10 | Toilet tank dispenser |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US44012682A | 1982-11-08 | 1982-11-08 | |
US06/939,271 US4709423A (en) | 1982-11-08 | 1986-12-10 | Toilet tank dispenser |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06608672 Continuation | 1984-05-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
US4709423A true US4709423A (en) | 1987-12-01 |
Family
ID=27032309
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/939,271 Expired - Fee Related US4709423A (en) | 1982-11-08 | 1986-12-10 | Toilet tank dispenser |
Country Status (1)
Country | Link |
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US (1) | US4709423A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5091107A (en) * | 1989-10-20 | 1992-02-25 | The Drackett Company | Chlorine dioxide generating device |
US6055679A (en) * | 1995-03-03 | 2000-05-02 | S. C. Johnson & Son, Inc. | Passive lavatory cleanser dispensing system |
US6071483A (en) * | 1996-08-02 | 2000-06-06 | Pastore; Mauro | Reactor vessel and process for preparing a controlled-dosage chlorine dioxide solution |
US7073209B1 (en) | 2005-05-18 | 2006-07-11 | Mccormick Kevin | Passive sanitizing-tablet dispensing device |
WO2008062364A1 (en) * | 2006-11-21 | 2008-05-29 | Valagam Raghunathan | A dissolvable-material dispenser for a toilet |
US20150345123A1 (en) | 2014-05-27 | 2015-12-03 | As Ip Holdco, Llc | Sanitaryware cleaning system |
US10465366B2 (en) | 2014-05-27 | 2019-11-05 | As America, Inc. | Sanitaryware cleaning system |
USD914838S1 (en) | 2015-05-27 | 2021-03-30 | AS America Inc. | Cartridge |
Citations (25)
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Cited By (9)
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US5091107A (en) * | 1989-10-20 | 1992-02-25 | The Drackett Company | Chlorine dioxide generating device |
US6055679A (en) * | 1995-03-03 | 2000-05-02 | S. C. Johnson & Son, Inc. | Passive lavatory cleanser dispensing system |
US6071483A (en) * | 1996-08-02 | 2000-06-06 | Pastore; Mauro | Reactor vessel and process for preparing a controlled-dosage chlorine dioxide solution |
US7073209B1 (en) | 2005-05-18 | 2006-07-11 | Mccormick Kevin | Passive sanitizing-tablet dispensing device |
WO2008062364A1 (en) * | 2006-11-21 | 2008-05-29 | Valagam Raghunathan | A dissolvable-material dispenser for a toilet |
US20150345123A1 (en) | 2014-05-27 | 2015-12-03 | As Ip Holdco, Llc | Sanitaryware cleaning system |
US10294643B2 (en) | 2014-05-27 | 2019-05-21 | As Ip Holdco, Llc | Sanitaryware cleaning system |
US10465366B2 (en) | 2014-05-27 | 2019-11-05 | As America, Inc. | Sanitaryware cleaning system |
USD914838S1 (en) | 2015-05-27 | 2021-03-30 | AS America Inc. | Cartridge |
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